text stringlengths 1 1.11k | source dict |
|---|---|
c++, performance
Title: Cosine similarity Is there anything to make the cosine similarity function more optimized in terms of CPU execution time?
double cosine_similarity(double *A, double *B, unsigned int size)
{
double mul = 0.0, d_a = 0.0, d_b = 0.0 ;
for(unsigned int i = 0; i < size; ++i)
{
m... | {
"domain": "codereview.stackexchange",
"id": 22159,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "c++, performance",
"url": null
} |
machine-learning, python, scikit-learn, regression
Title: Gaussian process regression: sudden increase of the prediction's variance I am trying to do a variance-based uncertainty sampling like in the book "Active Learning" by Burr Settles, page 18, Figure 2.6. Link to the book: http://active-learning.net/
I use Gauss... | {
"domain": "datascience.stackexchange",
"id": 3088,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "machine-learning, python, scikit-learn, regression",
"url": null
} |
# Optimization Math Ia Example | {
"domain": "acku.pw",
"id": null,
"lm_label": "1. YES\n2. YES\n\n",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9899864293768268,
"lm_q1q2_score": 0.8491787852922467,
"lm_q2_score": 0.8577681068080749,
"openwebmath_perplexity": 1152.3954427931264,
"openwebmath_score": 0.33084622025489807,
"tags": ... |
python, optimization, performance, numpy
subVal = {} # for diff eq substituion
for i in xrange(len(om)):
subVal.update({om[i]:init0[i]})
g = sympy.symbols('g0:%d'%len(om))
s = sympy.symbols('s0:%d'%len(om))
# set up dictionary for equations
eqDict = {g[0]:init0[0]}
for i in xran... | {
"domain": "codereview.stackexchange",
"id": 9116,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "python, optimization, performance, numpy",
"url": null
} |
reinforcement-learning, python, pytorch
Title: Why are the rewards of my RL agent for the Atari Breakout game decreasing after a certain number of episodes?
The agent is trying to master the Atari Breakout game.
Here is my code
Is that normal that reward_100 decreased that much after it hits 4.5? Is there a way to av... | {
"domain": "ai.stackexchange",
"id": 1858,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "reinforcement-learning, python, pytorch",
"url": null
} |
parsing, haskell, file, configuration
firstOfTriple :: (a, b, c) -> a
firstOfTriple (x, _, _) = x
parseProperty :: T.Text -> Maybe (T.Text, T.Text)
parseProperty line =
case T.splitOn "=" line of
[name, value] -> Just (T.strip name, T.strip value)
_ -> Nothing
updateSection :: Maybe Section -> ... | {
"domain": "codereview.stackexchange",
"id": 34561,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "parsing, haskell, file, configuration",
"url": null
} |
c#, exception-handling, exception
(Also note the use of conditional checks to determine if the user input is valid, rather than using exceptions for non-exceptional control flow.)
Now our loop is dead easy:
for (int i = 0; i < 10; i++)
{
int number = ReadNumber(start, end, i);
} | {
"domain": "codereview.stackexchange",
"id": 9404,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "c#, exception-handling, exception",
"url": null
} |
c#, algorithm, matrix
That is, given a graph and a node, return the set of nodes that is "reachable" starting at the start node.
Can you write this method?
IEnumerable<IEnumerable<T>> Partitions(IGraph<T> graph)
That is, given a graph, return a sequence where each element in the sequence is a collection of nodes tha... | {
"domain": "codereview.stackexchange",
"id": 21635,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "c#, algorithm, matrix",
"url": null
} |
2. $d\mu$ is covariant under the transformation $x\to x^b$ for nonzero numbers $b$: $$d\mu(x^b) = \frac{d(x^b)}{x^b} = \frac{b x^{b-1} dx}{x^b} = b\frac{dx}{x} = b\, d\mu.$$
3. $d\mu$ is transformed into $d\lambda$ via the exponential: $$d\mu(e^x) = \frac{de^x}{e^x} = \frac{e^x dx}{e^x} = dx = d\lambda.$$ Likewise, $d... | {
"domain": "stackexchange.com",
"id": null,
"lm_label": "1. YES\n2. YES",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9867771759145343,
"lm_q1q2_score": 0.885825225852663,
"lm_q2_score": 0.8976952927915969,
"openwebmath_perplexity": 194.34591193416304,
"openwebmath_score": 0.9655059576034546,
"tag... |
memory-hardware, coding-theory, hamming-code
Title: Compute the Hamming code with odd parity for the memory word 1101 1001 0001 1011 This is the problem I have:
Compute the Hamming code with odd parity for the memory word 1101 1001
0001 1011 (2 pts.). In your solution, mark the parity bits as in the
following exa... | {
"domain": "cs.stackexchange",
"id": 3444,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "memory-hardware, coding-theory, hamming-code",
"url": null
} |
newtonian-mechanics, centripetal-force, angular-velocity
Title: Confusion regarding the answer to a question about $(v_T)^2/r$ In this answer to the question "Intuitive explanation for why centripetal acceleration is $\frac{v^2}{r}$": https://physics.stackexchange.com/a/190532/262601 (excerpt from the answer is attach... | {
"domain": "physics.stackexchange",
"id": 78783,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "newtonian-mechanics, centripetal-force, angular-velocity",
"url": null
} |
phase-transition, density-functional-theory, liquid-crystal
Title: How to calculate excluded volume in Onsager's hard-rod model? Can somebody please provide a derivation of how to calculate excluded volume of two rods with angle of intersection being $\gamma$. rods are cylinders, capped with semi-spheres. Onsager theo... | {
"domain": "physics.stackexchange",
"id": 17661,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "phase-transition, density-functional-theory, liquid-crystal",
"url": null
} |
Help would be appreciated.
vela
Staff Emeritus
Homework Helper
After switching the order of integration, when you integrate with respect to x, you're holding y constant and varying x. In other words, you're moving along a horizontal line in the xy plane. So let's consider a couple of these lines. Take y=3.5a, for inst... | {
"domain": "physicsforums.com",
"id": null,
"lm_label": "1. YES\n2. YES\n\n",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.951142217223021,
"lm_q1q2_score": 0.8263778327949787,
"lm_q2_score": 0.8688267830311354,
"openwebmath_perplexity": 209.96306277011948,
"openwebmath_score": 0.7862080931663513,
... |
c++, performance, algorithm
I’ve already shown how readCSV() can be improved if you improve SensorData, but I’ll dig into this function anyway.
First, you don’t want to be taking the function argument by value. That creates a copy of the string… and there’s no point. If you’re just going to be looking at its value, yo... | {
"domain": "codereview.stackexchange",
"id": 40382,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "c++, performance, algorithm",
"url": null
} |
html, html5
<header>
<h1><img src="" alt="…"></h1>
<nav></nav>
</header>
<main>
<section>
<h1>Freundliche Artikel</h1>
<ul>
<li>
<article>
<h2>We can't stop here</h2>
</article>
</li>
<li>
<article>
<h2>Introduction anyone?</h2>
... | {
"domain": "codereview.stackexchange",
"id": 5844,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "html, html5",
"url": null
} |
quantum-mechanics, quantum-tunneling
Title: What happens if particle is measured outside finite well? A particle, which is in bound state (and eigenstate) of a finite well, has a small probability of being found just outside the well. If one happens to locate it there, then to the experimenter how will the particle ma... | {
"domain": "physics.stackexchange",
"id": 49159,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "quantum-mechanics, quantum-tunneling",
"url": null
} |
to the start of the array’s data. I don’t recommend using this. Using this library, we can perform complex matrix operations like multiplication, dot product, multiplicative inverse, etc. I do love Jupyter notebooks, but I want to use this in scripts now too. In this post, we will be learning about different types of m... | {
"domain": "beterontleden.nl",
"id": null,
"lm_label": "1. YES\n2. YES",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9766692325496973,
"lm_q1q2_score": 0.8358834846807569,
"lm_q2_score": 0.8558511488056151,
"openwebmath_perplexity": 659.2288468409985,
"openwebmath_score": 0.5261455774307251,
"tags... |
2. Originally Posted by stoorrey
(a) What is the probability that a randomly selected male would find this change unfavorable (negative)?
= number on males with negative reaction divided by the total number of males
Originally Posted by stoorrey
(b) What is the probability that a randomly selected person would be a fe... | {
"domain": "mathhelpforum.com",
"id": null,
"lm_label": "1. YES\n2. YES\n\n",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9884918509356966,
"lm_q1q2_score": 0.8844920906921188,
"lm_q2_score": 0.894789461192692,
"openwebmath_perplexity": 699.3556623555581,
"openwebmath_score": 0.7383276224136353,
"... |
quantum-state, experimental-realization
Title: Visualize representation of a qubit I am new to quantum computing and I am learning about qubits.
I recently learnt a qubit can be represented by $\alpha |0\rangle + \beta|1\rangle$ where $\alpha, \beta \in \mathbb{C}$ and $|\alpha|^2 + |\beta|^2=1$. After a while, I real... | {
"domain": "quantumcomputing.stackexchange",
"id": 3859,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "quantum-state, experimental-realization",
"url": null
} |
quantum-mechanics, homework-and-exercises, operators, hilbert-space, observables
Title: Check if operator $A$ is an observable Given operator $A$ and following relationships:
$A|2\rangle=|1\rangle+|3\rangle$ and
$A|1\rangle=A|3\rangle=|2\rangle$.
I know that this operator should be self adjoint to correspond to an ob... | {
"domain": "physics.stackexchange",
"id": 43821,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "quantum-mechanics, homework-and-exercises, operators, hilbert-space, observables",... |
computability, halting-problem
For more on this, see the Arithmetic Hierarchy. Anything above $\Sigma^0_0=\Pi^0_0$ is undecidable, though level 1 is semi-decidable.
It's also possible to show that there are undecidable problems without using a nonsensical paradox like the Halting problem or Liar’s paradox. A Turing Ma... | {
"domain": "cs.stackexchange",
"id": 18244,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "computability, halting-problem",
"url": null
} |
optics, waves, laser, photonics
The other part of the exponent contributes to the amplitude or absolute value of the expression. The gain is equal to that amplitude: $r_1 r_2 e^{(G-\alpha) L}$. If the amplitude is less than 1, then the power of the light decreases with each round trip between the mirrors and there i... | {
"domain": "physics.stackexchange",
"id": 64695,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "optics, waves, laser, photonics",
"url": null
} |
# How many integers in the range [1,999] are divisible by exactly 1 of 7 and 11?
This is a question in Kenneth Rosen's Discrete Mathematics textbook 6th edition. I haven't had trouble with any other counting problems regarding "how many numbers in range [x,y] have divisibility property Z?" My issue is I have no idea w... | {
"domain": "stackexchange.com",
"id": null,
"lm_label": "1. YES\n2. YES\n\n",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9811668706602658,
"lm_q1q2_score": 0.8434735901440332,
"lm_q2_score": 0.8596637487122111,
"openwebmath_perplexity": 119.58111626990896,
"openwebmath_score": 0.7390719056129456,
... |
This formula is itself not so interesting, but that one can know this general result from manipulating nothing more than the angle properties of triangles, polygons, and linear pairs is nice and completely accessible to geometry students of many levels and ages.
Again, I’d love to hear (and will post/share) any other ... | {
"domain": "wordpress.com",
"id": null,
"lm_label": "1. YES\n2. YES",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9865717456528508,
"lm_q1q2_score": 0.8133908376744382,
"lm_q2_score": 0.8244619220634457,
"openwebmath_perplexity": 1055.0532797372414,
"openwebmath_score": 0.7279426455497742,
"tags":... |
Since $$x^3+1 = (x+1)(x^2-x+1)$$ so $$x^3 = (x+1)(x^2-x+1)-1$$ the answer is $$-1$$.
Similarly for $$\begin{eqnarray}x^{3n}+1 &=& (x^3+1)\underbrace{\Big((x^3)^{n-1}-(x^3)^{n-2}+...-(x^3)+1\Big)}_{q(x)}\\ &=& (x+1)(x^2-x+1)q(x)\\ \end{eqnarray}$$
so the answer is again $$-1$$.
Another way if you're familiar with mod... | {
"domain": "stackexchange.com",
"id": null,
"lm_label": "1. YES\n2. YES",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9835969698879861,
"lm_q1q2_score": 0.8153416959308735,
"lm_q2_score": 0.8289388040954683,
"openwebmath_perplexity": 204.66875385058717,
"openwebmath_score": 0.7563844919204712,
"ta... |
neural-networks, long-short-term-memory, attention
To prove this point, I recommend reading Andrej Karpathy's excelllent write-up about the behaviour of individual RNN "neurons".
Addressing specifically this comment in your question: | {
"domain": "ai.stackexchange",
"id": 1674,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "neural-networks, long-short-term-memory, attention",
"url": null
} |
noise, radio, interference
This outlines a comprehensive way to consistently compare the performance of different receivers and how they can perform in challenging environments with interference. If the interference expected is further defined (such as actual waveforms in adjacent channels etc) then these can be inclu... | {
"domain": "dsp.stackexchange",
"id": 11242,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "noise, radio, interference",
"url": null
} |
```P = [0 1 0; 0 0 1; 1 0 0]; mc = dtmc(P);```
At time t = 1,..., T, `mc` is forced to move to another state deterministically.
Determine the stationary distribution of the Markov chain and whether it is ergodic.
`xFix = asymptotics(mc)`
```xFix = 1×3 0.3333 0.3333 0.3333 ```
`isergodic(mc)`
```ans = logical 0 ```
... | {
"domain": "mathworks.com",
"id": null,
"lm_label": "1. YES\n2. YES",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9802808695883038,
"lm_q1q2_score": 0.8082042562449097,
"lm_q2_score": 0.824461928533133,
"openwebmath_perplexity": 1245.1246621919074,
"openwebmath_score": 0.6978907585144043,
"tags": ... |
Thanks to Arnauld, save 1 byte.
Jelly, 7 bytes
ŒPŒ¿€4ḟ
Try it online!
Returns [4] for traversals, otherwise [].
Essentially uses tsh's algorithm: the "disqualifying" condition for a pre-order traversal is a subsequence of 3 elements that looks like [mid, high, low]. (For example, [20, 30, 10].)
We equivalently c... | {
"domain": "stackexchange.com",
"id": null,
"lm_label": "1. YES\n2. YES",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9808759674419192,
"lm_q1q2_score": 0.8064655545473448,
"lm_q2_score": 0.8221891261650247,
"openwebmath_perplexity": 3474.962121090979,
"openwebmath_score": 0.30547282099723816,
"ta... |
c++, game
string Rooms::getName() {
return name;
}
void Rooms::incrementActionCount() {
actionCount++;
}
void Rooms::setDescription(string disc) {
description = disc;
}
bool Rooms::getEmpty() {
return empty;
}
void Rooms::setHint(string hnt) {
hint = hnt;
}
void Rooms::setActions(int act) {
... | {
"domain": "codereview.stackexchange",
"id": 37347,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "c++, game",
"url": null
} |
newtonian-mechanics, reference-frames, rotational-kinematics, angular-velocity
Title: Relative angular velocity of point with respect to another point What is relative angular velocity of one point, say A, with respect to another point, say B? Both the points lie on the same rigid body which is rotating with constant ... | {
"domain": "physics.stackexchange",
"id": 70809,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "newtonian-mechanics, reference-frames, rotational-kinematics, angular-velocity",
... |
Great Portland Street LondonW1W 5PQ, Email: sMTk3NTk.outerHTML=atob('PGEgaHJlZj0ibWFpbHRvOm9mZmljZUBzYW5kaXNvbmxhbmcuY29tIj5vZmZpY2VAc2FuZGlzb25sYW5nLmNvbTwvYT4='), Sandison Lang is the trading name of Sandison Lang Ltd. Complex numbers in rectangular form are presented as a + b * %i, where a and b are real numbers.Pol... | {
"domain": "elab.is",
"id": null,
"lm_label": "1. Yes\n2. Yes\n\n",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9759464499040092,
"lm_q1q2_score": 0.8352648939113813,
"lm_q2_score": 0.8558511524823263,
"openwebmath_perplexity": 1342.5111164313003,
"openwebmath_score": 0.7379550337791443,
"tags": n... |
quantum-field-theory, commutator, causality
Title: Propagator Causality with commutators all the way We know that two fields commute - by locality and causality - iff there is spacelike separation
$\left[\phi_l^k(x) , \phi_m^{k'}(y)\right] = 0$ for $(x-y)^2<0$
In the canonical quantization of the Dirac field, if $b_\a... | {
"domain": "physics.stackexchange",
"id": 62654,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "quantum-field-theory, commutator, causality",
"url": null
} |
java, performance, tree
Thus, know the problem you solve: for small sets, write nice code and use your version, for big data sets, optimize by unrolling and use the second version.
(BTW: in my university courses, it was generally recommended to use the second version for NP problems due to raw speed - albeit in C at t... | {
"domain": "codereview.stackexchange",
"id": 26088,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "java, performance, tree",
"url": null
} |
java, jdbc, connection-pool
You'd have to share this across threads manually, but alas, the same problem is present in the current code.
<interjection>
How other languages do it:
.NET has the following in their docs for SQLConnection:
Login and logout events will not be raised on the server when a
connection is fet... | {
"domain": "codereview.stackexchange",
"id": 18469,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "java, jdbc, connection-pool",
"url": null
} |
8. Jul 19, 2014
### matineesuxxx
Clever. I like that.
9. Jul 20, 2014
Thanks everyone, I think I get it now.
10. Jul 20, 2014
### 1MileCrash
Which is how I recommend always defining absolute value. Such a simple expression need not be convoluted with if thens and piecewise representations.
I also recommend the ... | {
"domain": "physicsforums.com",
"id": null,
"lm_label": "1. YES\n2. YES",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.984336352666835,
"lm_q1q2_score": 0.8306766253496696,
"lm_q2_score": 0.843895100591521,
"openwebmath_perplexity": 395.615242872682,
"openwebmath_score": 0.8473161458969116,
"tags":... |
z-transform, infinite-impulse-response, transfer-function
$$ \sum_i a_i y[n-i] = \sum_i b_i x[n-i] $$
it has a one to one correspondence with the z-transform.
$$H(z) = \frac{\sum_i b_i z^{-i}}{\sum_i a_i z^{-i}} $$
In your example
$$y[n]-a_2 \cdot y[n-2] = x[n]$$ yields $$H(z) = \frac{1}{1-a_2 \cdot z^{-2}}$$ | {
"domain": "dsp.stackexchange",
"id": 10443,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "z-transform, infinite-impulse-response, transfer-function",
"url": null
} |
=! In derivatives markets curve fitting method construction of the data list at the website ( as of August 2018 ) but. Appears to have a relative l⦠Despite its name, you can fit some polynomial... Additional constraints on the … regression und fit ( ting ) sind häufig verwendete Verfahren der.. In both linear regres... | {
"domain": "co.uk",
"id": null,
"lm_label": "1. YES\n2. YES\n\n",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9744347838494567,
"lm_q1q2_score": 0.8011696940518392,
"lm_q2_score": 0.8221891370573388,
"openwebmath_perplexity": 1750.6213855471512,
"openwebmath_score": 0.881700336933136,
"tags": null... |
$$g_n(k) = f_{n+1}(k) - f_n(k)$$
Finally, there is a one-to-one correspondence between the binary strings of length $$k$$ and and the integers in $$[1, 2^k)$$ for our problem of counting the maximal sequence of ones.
Unfortunately I don't know where you got the numbers in your post from, as they are not correct. The ... | {
"domain": "stackexchange.com",
"id": null,
"lm_label": "1. YES\n2. YES",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9811668690081642,
"lm_q1q2_score": 0.8111422267495003,
"lm_q2_score": 0.8267117983401363,
"openwebmath_perplexity": 1428.7463989783982,
"openwebmath_score": 0.9980400204658508,
"ta... |
quantum-mechanics, quantum-field-theory, dirac-equation
Nevertheless, in order to be able to construct chirality eigenstates we need the other four solutions and I'm unsure in how far we can then say that four of the eight solutions are really linearly dependent. A chiral eigenstate must always be of the form $ \psi_... | {
"domain": "physics.stackexchange",
"id": 18782,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "quantum-mechanics, quantum-field-theory, dirac-equation",
"url": null
} |
simulation, real-time
If I consider that 2s delay and shift the virtual time to 11:00:02, the event B will be overpassed (See Edit). But the clock will be the same as it would be in a real-world system.
If I ignore this 2s response time, the model will shift the clock to 11:00:01 and execute event B, although the time... | {
"domain": "cs.stackexchange",
"id": 20570,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "simulation, real-time",
"url": null
} |
a level from the number of propagations done. Thus as our general hypothesis is true that the number of propagations correlates to the complexity we can look at the automatic measure of propagations rather than user intuition for comparing this data to the curvature and boundary measures. | {
"domain": "summergeometry.org",
"id": null,
"lm_label": "1. YES\n2. YES",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9783846697584034,
"lm_q1q2_score": 0.8110210180948707,
"lm_q2_score": 0.8289388040954684,
"openwebmath_perplexity": 567.7323152106014,
"openwebmath_score": 0.6471073627471924,
"ta... |
Incidentally, you need to choose a base point on your space to define pi0. Once you have that, it is the set of homotopy classes of pointed maps from S0 to your space. Equivalently, it is the (pointed) set of path components. It does not have a natural group structure (although it may if your space comes with some kind... | {
"domain": "mathoverflow.net",
"id": null,
"lm_label": "1. YES\n2. YES",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9711290963960277,
"lm_q1q2_score": 0.8050065958927765,
"lm_q2_score": 0.8289388083214156,
"openwebmath_perplexity": 350.29677328080635,
"openwebmath_score": 0.7638905048370361,
"tag... |
gazebo, navigation, rviz, ros-kinetic, teb-local-planner
[ INFO] [1540834009.638543716, 14.249000000]: Using plugin "inflation_layer"
[ INFO] [1540834009.685154386, 14.296000000]: Loading from pre-hydro parameter style
[ INFO] [1540834009.699557342, 14.311000000]: Using plugin "static_layer"
[ INFO] [1540834009.703080... | {
"domain": "robotics.stackexchange",
"id": 31982,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "gazebo, navigation, rviz, ros-kinetic, teb-local-planner",
"url": null
} |
php
<p align=\"center\">
<b>Game Name:</b><br />
<input name=\"game_name\" size=\"20\" />
</p>
<p align=\"center\">
<b>Image URL:</b><br />
<input name=\"game_image_url\" size=\"50\" />
</p>
<p align=\"center\">
<b>Visible?</b><br />
Does our community play this game? Do you<b... | {
"domain": "codereview.stackexchange",
"id": 19546,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "php",
"url": null
} |
quantum-mechanics, hilbert-space, mathematical-physics, density-operator, quantum-states
Therefore, one should try to prove that $S(H)$ is a compact subset of $B_1(H)$.
From the sketch of proof, it seems that the authors use the fact that $B_1(H)$ is the topological dual space of some other space. All that in order t... | {
"domain": "physics.stackexchange",
"id": 97532,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "quantum-mechanics, hilbert-space, mathematical-physics, density-operator, quantum-... |
quantum-information, quantum-entanglement
Question 1) How would a typical round in the game proceed like? More specifically how does a string bit 0 or 1 correspond to a question posed by a referee? Does it in fact correspond to the "true" value/answer of the question? Say the referee asks Alice "0" - this for me does ... | {
"domain": "physics.stackexchange",
"id": 46947,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "quantum-information, quantum-entanglement",
"url": null
} |
electromagnetism, forces, electric-circuits, classical-electrodynamics, mathematics
The relevant change can be made to the first edition starting from equation (10), by simply replacing $A$ with $A+2C$. Unfortunately, the third edition dropped the parentheses that would be needed to do this correctly in equations (10... | {
"domain": "physics.stackexchange",
"id": 45162,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "electromagnetism, forces, electric-circuits, classical-electrodynamics, mathematic... |
programming-challenge, functional-programming, f#
And the following extra code for first problem:
(******* Project Euler 1 : Sum of multiples of 3 and 5 ***************)
let sumFactorsOfNBelowK k n =
let m = ( k - 1 ) / n
n * m * ( m + 1 ) / 2
let mod3or5 x =
x % 3 = 0 || x % 5 = 0
let euler_1_org() =... | {
"domain": "codereview.stackexchange",
"id": 17189,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "programming-challenge, functional-programming, f#",
"url": null
} |
homework-and-exercises, newtonian-mechanics, newtonian-gravity, orbital-motion
$(1+\epsilon)R_{SB}+(1+\delta)R_{SA}=(1+\frac{1+\delta}{1+\epsilon}(\frac{T_A}{T_B})^{\frac23})\frac{1+\epsilon}{1-\epsilon}R$.
If we assume that $\delta=\epsilon$ then you get the expression in your answer key, viz. $(1+(\frac{T_A}{T_B})^... | {
"domain": "physics.stackexchange",
"id": 34156,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "homework-and-exercises, newtonian-mechanics, newtonian-gravity, orbital-motion",
... |
×
Custom Search
cancel
×
×
# Square of a Number Using Vedic Mathematics
Let’s see how we can find square of a number faster using Vedic Mathematics (Nikhilam method)
Example 1: Find square of $12$
Step 1
$10$ is the nearest power of $10$ which can be taken as our base. The deviation to our base $=12-10=2$ (To find... | {
"domain": "careerbless.com",
"id": null,
"lm_label": "1. YES\n2. YES",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.988841968751916,
"lm_q1q2_score": 0.8037973189045956,
"lm_q2_score": 0.8128673178375735,
"openwebmath_perplexity": 675.1511010449078,
"openwebmath_score": 0.7153474688529968,
"tags":... |
asteroids, comets
Title: How significant are the recent results that Scholz’s Star has perturbed several observed hyperbolic objects? The Gizmodo article A Visiting Star Jostled Our Solar System 70,000 Years Ago refers to the the three year old ApJ. paper The Closest Known Flyby of a Star to the Solar System (also arX... | {
"domain": "astronomy.stackexchange",
"id": 2822,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "asteroids, comets",
"url": null
} |
general-relativity, gravity, loop-quantum-gravity
What exactly is a?
$a$ is the universal scale factor. It is also written as a function of time: $a=a(t)$. As you can see, it features prominently in the Friedmann equations (and is featured in the FLRW metric), and is important when studying the expansion of the unive... | {
"domain": "physics.stackexchange",
"id": 17794,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "general-relativity, gravity, loop-quantum-gravity",
"url": null
} |
quantum-mechanics, quantum-field-theory
Title: Are there any open questions in theoretical quantum physics? I am wondering if there are any open questions about the structure of quantum mechanics. If so, how do you know that this is an open question? Topics that come to mind are electron spin, probability amplitudes, ... | {
"domain": "physics.stackexchange",
"id": 54727,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "quantum-mechanics, quantum-field-theory",
"url": null
} |
quantum-field-theory, special-relativity, lagrangian-formalism
(f_T)_g(\phi(x)) &= \phi(x) \\
(f_M)_g(x) &= \Lambda^{-1}x \\
(F_T)_g(\phi)(x) &= \phi(x) \\
(F_M)_g(\phi)(x) &= \phi(\Lambda^{-1}x) \\
F_g(\phi)(x) &= \phi(\Lambda^{-1}x)
\end{align}
Notice that $f_T$ is simply the identity mapping on the target s... | {
"domain": "physics.stackexchange",
"id": 10389,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "quantum-field-theory, special-relativity, lagrangian-formalism",
"url": null
} |
computability, semi-decidability
The basic idea for a reduction is always this: build a function that depends on $x$ and whose encoding is in $S$ if and only if $x \in \overline{K}$ -- then we got a deal.
So, consider
$\qquad\displaystyle g_x(n) =
\begin{cases}
n, &f_x(x) \text{ halts after at most $n$ st... | {
"domain": "cs.stackexchange",
"id": 2251,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "computability, semi-decidability",
"url": null
} |
quantum-gate, programming, q#
Thus, even though X(qs[0]) and X(qs[1]) are very different instructions, they do the same thing in the special case of the Bell state $\left|\Phi^{+}\right\rangle$.
In the same way, Z(qs[0]) and Z(qs[1]) do the same thing to $\left|\Phi^{+}\right\rangle$.
Another way of thinking of why th... | {
"domain": "quantumcomputing.stackexchange",
"id": 951,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "quantum-gate, programming, q#",
"url": null
} |
ros
04-09 10:58:24.643: D/dalvikvm(343): VFY: replacing opcode 0x6e at 0x0006
04-09 10:58:24.643: D/dalvikvm(343): VFY: dead code 0x0009-0010 in Lorg/ros/android/RosActivity;.onDestroy ()V
04-09 10:58:24.654: I/dalvikvm(343): Failed resolving Lorg/ros/android/NodeRunnerService; interface 142 'Lorg/ros/node/NodeMainExe... | {
"domain": "robotics.stackexchange",
"id": 8925,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "ros",
"url": null
} |
pictorial representation:. Each inner iteration for j from 0 to ( n – 1 ) code is n't working 1D,! Character ( \n ) after each inner iteration and prints first n rows of Pascal ’ triangle... 10 years, 5 months ago above it and update it ( N^2 ) and the space complexity is (! Note, DP is an approach, not an Algorithm bu... | {
"domain": "ftsamples.com",
"id": null,
"lm_label": "1. YES\n2. YES",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9632305360354472,
"lm_q1q2_score": 0.802683688659558,
"lm_q2_score": 0.8333245870332531,
"openwebmath_perplexity": 1349.2390573447963,
"openwebmath_score": 0.34614333510398865,
"tags":... |
bioinformatics, fluorescent-microscopy, image-processing, resource-recommendation, imagej
Title: Suggestion on program/algorithm to segment nuclei I've got some images such as the one in this post, obtained from the neuroepithelium of a chick embryo in a confocal microscope, where nuclei have been fluorescently labele... | {
"domain": "biology.stackexchange",
"id": 12437,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "bioinformatics, fluorescent-microscopy, image-processing, resource-recommendation,... |
c++, multithreading, concurrency, queue, producer-consumer
Title: C++14 Lock-free Multi-producer, Multi-Consumer Queue Introduction
This is a follow-up to a previous question of mine, where I presented another queue of the same type to get some feedback on it. Some people pointed out some fundamental errors I had mad... | {
"domain": "codereview.stackexchange",
"id": 42825,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "c++, multithreading, concurrency, queue, producer-consumer",
"url": null
} |
It is important to note that in the limit $${\Delta t}\to 0$$, the last time index $$T/{\Delta t}\to \infty$$ even for finite $$T$$; the time interval between adjacent numerical solution points $$(t^ n,v^ n)$$ and $$(t^{n+1},v^{n+1})$$ is also shrinking to zero. So not only does our numerical solution approach zero err... | {
"domain": "mit.edu",
"id": null,
"lm_label": "1. YES\n2. YES",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9883127426927788,
"lm_q1q2_score": 0.8278304832961478,
"lm_q2_score": 0.8376199633332891,
"openwebmath_perplexity": 164.95600050801116,
"openwebmath_score": 0.9099132418632507,
"tags": null,... |
electrostatics, differential-geometry, gauss-law, education, dirac-delta-distributions
This certainly resolves the apparent paradox - that $\mathrm{div}(\mathbf F)$ vanishes on the domain of $\mathbf F$ but the left-hand side of $(\star)$ does not - but it doesn't really tell us how to move forward with our analysis. ... | {
"domain": "physics.stackexchange",
"id": 88212,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "electrostatics, differential-geometry, gauss-law, education, dirac-delta-distribut... |
newtonian-mechanics, newtonian-gravity, estimation, tidal-effect
Title: Given that the Moon affects tides and most of the human body is water, do tides affect people? It is known that the Moon causes tides. Given that the human body is 60%-70% water, is there any research that shows that the tides affect humans in any... | {
"domain": "physics.stackexchange",
"id": 94962,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "newtonian-mechanics, newtonian-gravity, estimation, tidal-effect",
"url": null
} |
haruspex
Homework Helper
Gold Member
2020 Award
I have a last question that asks me to draw a free body diagram during the throw. Perhaps that's where the length of his arm and the height when the ball leaves his hand comes into play, right?
The length of the arm, yes, but not the launch height. Because the question pr... | {
"domain": "physicsforums.com",
"id": null,
"lm_label": "1. YES\n2. YES\n\n",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9632305339244013,
"lm_q1q2_score": 0.8262284350063155,
"lm_q2_score": 0.8577681104440172,
"openwebmath_perplexity": 363.31462479800683,
"openwebmath_score": 0.7623463273048401,
... |
java, object-oriented
}
Example
If you have implemented the interfaces properly you should have easy to use CLI support for your apps:
public static void main(String[] args) {
ExampleApplication app = new ExampleApplication();//implements CommandLineInterpreter
CommandLineInterface commandLineInterface = new ... | {
"domain": "codereview.stackexchange",
"id": 33655,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "java, object-oriented",
"url": null
} |
4. Jan 7, 2017
### gruba
Could you give a reference to the similar solved problem type if you know, or could you give detailed explanation of the problem?
5. Jan 7, 2017
6. Jan 7, 2017
### PeroK
It's not that complicated. Try to model what would happen if they continued the game. To help you get started, the next... | {
"domain": "physicsforums.com",
"id": null,
"lm_label": "1. YES\n2. YES",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9869795087371921,
"lm_q1q2_score": 0.8609889898590759,
"lm_q2_score": 0.8723473813156294,
"openwebmath_perplexity": 651.2931109614079,
"openwebmath_score": 0.5558132529258728,
"tag... |
This is not really an answer but too long for a comment, so I post this anyway.
I was able to get a coefficient greater than 1 two times out of a hundred for a sample size of 100 (using "R"): | {
"domain": "stackexchange.com",
"id": null,
"lm_label": "1. YES\n2. YES",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9664104953173167,
"lm_q1q2_score": 0.8032253726444892,
"lm_q2_score": 0.8311430562234878,
"openwebmath_perplexity": 804.4146440361708,
"openwebmath_score": 0.8754213452339172,
"tag... |
digital-communications, qpsk, synchronization
However, my goal is to make the constellation like the last plot. What can I do? I am really stucked The OP is correct that the constellation is spinning due to a frequency offset, and removing the phase versus time is the right direction to take (which is frequency offset... | {
"domain": "dsp.stackexchange",
"id": 12156,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "digital-communications, qpsk, synchronization",
"url": null
} |
astrophysics, plasma-physics, sun, solar-wind
Title: Energy spectrum of Solar energetic particles (SEP's) I would like to know if we have obtained any observations regarding the energy spectrum of solar energetic particles. Something like the following histogram :
And if so, what is the index of the power-law. Thank ... | {
"domain": "physics.stackexchange",
"id": 65652,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "astrophysics, plasma-physics, sun, solar-wind",
"url": null
} |
c, formatting, integer, bitwise, gcc
And its output:
....----....----....----....----
1011110;
1011110;
1011110; ... | {
"domain": "codereview.stackexchange",
"id": 45104,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "c, formatting, integer, bitwise, gcc",
"url": null
} |
ros, callback
Original comments
Comment by dornhege on 2014-12-10:
What is addCallback? Do you want to make another subscription or just "do the same thing as a callback would have" - in the latter case: It's just a function that you can call.
Comment by arenillas on 2014-12-10:
I have changed the question because It ... | {
"domain": "robotics.stackexchange",
"id": 20301,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "ros, callback",
"url": null
} |
Shapiro's statement [page 9] is about the different intuitionistic meaning of $\exists x \ \lnot P(x)$ and $\lnot \forall x \ P(x)$ :
The content of a proposition that there is a number that lacks $P$ is that ...Intuistionists agree that $\exists x \ \lnot P(x)$ entails $\lnot \forall x \ P(x)$, but they balk at the c... | {
"domain": "stackexchange.com",
"id": null,
"lm_label": "1. YES\n2. YES",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9416541643004809,
"lm_q1q2_score": 0.800378897093331,
"lm_q2_score": 0.849971175657575,
"openwebmath_perplexity": 482.7148231414276,
"openwebmath_score": 0.8643293380737305,
"tags"... |
pytorch, vectors
$$
J^{T} \cdot \vec{v}=\left(\begin{array}{ccc}
\frac{\partial y_{1}}{\partial x_{1}} & \cdots & \frac{\partial y_{m}}{\partial x_{1}} \\
\vdots & \ddots & \vdots \\
\frac{\partial y_{1}}{\partial x_{n}} & \cdots & \frac{\partial y_{m}}{\partial x_{n}}
\end{array}\right)\left(\begin{array}{c}
\frac{\p... | {
"domain": "ai.stackexchange",
"id": 2944,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "pytorch, vectors",
"url": null
} |
c++, c++14, pointers, qt
Write operator== and operator!= differently, and they will be far more comprehensive and useful:
template <class T, class D, class U>
constexpr auto operator==(const UniquePointer<T, D>& a, const U& b) noexcept
-> decltype(b == a.d)
{ return b == a.d; }
template <class T, class D, class U>
con... | {
"domain": "codereview.stackexchange",
"id": 30670,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "c++, c++14, pointers, qt",
"url": null
} |
python, performance, python-3.x, file, heap-sort
You impose a million-line max on each piece.
But the true goal was to cap RAM consumption,
which is indirectly related through the average chars-per-line
for a given input file.
Consider adding up line lengths
rather than incrementing by one for each line.
Related to th... | {
"domain": "codereview.stackexchange",
"id": 34675,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "python, performance, python-3.x, file, heap-sort",
"url": null
} |
r, scrnaseq, statistics
measureConvergence <- function(mat, sce = sce, ptime = 45, increment_size = 500){
# this line is throwing an error
mat[,"avg"] <- apply(mat[,1:dim(mat)[2]],1,mean)
mat <- mat[order(mat[,"avg"]), , drop = FALSE]
# select a random pseudotime increment
mat <- mat[mat[, "avg"] >... | {
"domain": "bioinformatics.stackexchange",
"id": 1472,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "r, scrnaseq, statistics",
"url": null
} |
With nbins = 25 we get
• I take it that if I would like to increase the number of squares, I just alter that 5 in the second line? Also, I tried changing it to 25 and it looks good, but there are a lot of data ticks. Is it possible to maybe only show every second, or even third data tick? – Lagiacrus Feb 27 '18 at 18:... | {
"domain": "stackexchange.com",
"id": null,
"lm_label": "1. YES\n2. YES",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9766692325496974,
"lm_q1q2_score": 0.8502855577984366,
"lm_q2_score": 0.8705972600147105,
"openwebmath_perplexity": 1085.739176295797,
"openwebmath_score": 0.2794909179210663,
"tag... |
10^5$$ This is called scientific notation, or a power of 10. The metric prefixes indicate that the basic unit has either been multiplied or divided by a factor of ten. There is even someone selling an e-book for metric prefix flashcards. mega- 1,000,000 or 106 Conversions between metric system units are straightforward... | {
"domain": "mosonbutor.hu",
"id": null,
"lm_label": "1. YES\n2. YES",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9736446471538802,
"lm_q1q2_score": 0.8712069774150254,
"lm_q2_score": 0.8947894696095782,
"openwebmath_perplexity": 1400.9622831616473,
"openwebmath_score": 0.6760522127151489,
"tags":... |
be... Called does a kite have parallel sides ===== you dont get it the student circles just the square Country anymore, so these consecutive sides. Of a kite is a type of kite: 1 on a Hanukkah menorah congruent... what Shapes exactly... The cause of some controversy among mathematicians, but I do n't Think that kites h... | {
"domain": "xixonspanishrestaurant.com",
"id": null,
"lm_label": "1. Yes\n2. Yes\n\n",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9805806540875628,
"lm_q1q2_score": 0.8171419686203154,
"lm_q2_score": 0.8333245870332531,
"openwebmath_perplexity": 920.5362119043538,
"openwebmath_score": 0.45532315969... |
filter, please make sure that the domains *. Time Complexity The time complexity of both DFS and BFS traversal is O(N + M) where N is number of vertices and M is number of edges in the graph. There are two cases in the algorithm:. Many problems in computer science can be thought of in terms. Tags: See More, See Less 8.... | {
"domain": "tuttosulromanzo.it",
"id": null,
"lm_label": "1. YES\n2. YES\n\n",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9843363494503272,
"lm_q1q2_score": 0.8181243115413387,
"lm_q2_score": 0.831143045767024,
"openwebmath_perplexity": 773.6608639144047,
"openwebmath_score": 0.5191403031349182,
... |
performance, php, php5
$sql = "Select maestro from musicinfo";
$db->setQuery($sql);
$rows = $db->loadRowList();
$data1 = json_encode($rows[0]);
Third, given you are encoding only the first item of the array, it seems an array is not needed at all, so select and fetch one line only.
$sql = "Select ranchstyle from info... | {
"domain": "codereview.stackexchange",
"id": 26646,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "performance, php, php5",
"url": null
} |
speech-recognition, sound, mfcc
Title: What is the DTW result (applied to the MFCCs of an audio file) proportional to? I have computed the MFCCs for two audio files and applied the DTW to both sets of coeficients for both files. Now each such pair the two files is described by one single value (computed by the DTW). L... | {
"domain": "dsp.stackexchange",
"id": 815,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "speech-recognition, sound, mfcc",
"url": null
} |
java, multithreading, android, xml, adventure-game
setBackground(getResources().getDrawable(R.mipmap.view1));
}
falling = BitmapFactory.decodeResource(getResources(), resourceIdFalling); //load a falling image
hero = BitmapFactory.decodeResource(getResources(), resourceIdHero); //load a hero im... | {
"domain": "codereview.stackexchange",
"id": 28342,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "java, multithreading, android, xml, adventure-game",
"url": null
} |
While we do not have time to dive all the way into the thorny numerical issues frequently encountered when working with linear algebra, we want to provide you with some intuition about when to proceed with caution, and generally avoiding inversion in practice is a good rule of thumb.
## 17.1.8. Determinant¶
The geome... | {
"domain": "d2l.ai",
"id": null,
"lm_label": "1. YES\n2. YES",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9867771778588348,
"lm_q1q2_score": 0.802118926816257,
"lm_q2_score": 0.8128673269042767,
"openwebmath_perplexity": 275.3627365559314,
"openwebmath_score": 0.884429395198822,
"tags": null,
"... |
D. $$\frac{S}{2}$$+1
E. $$\frac{S}{2}$$+2
We are given that two numbers differ by 2 and sum to S.
We can let the smaller number = x and the larger number = x + 2.
Since the two numbers sum to S, we have:
x + x + 2 = S
2x + 2 = S
2x = S - 2
x = (S - 2)/2 = S/2 -1
Thus, the greater number is x + 2 = S/2 - 1 + 2 ... | {
"domain": "gmatclub.com",
"id": null,
"lm_label": "1. Yes\n2. Yes",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9693241982893259,
"lm_q1q2_score": 0.8056470665018691,
"lm_q2_score": 0.831143045767024,
"openwebmath_perplexity": 4941.035560572777,
"openwebmath_score": 0.7322189211845398,
"tags": nu... |
python, python-3.x, multithreading, web-scraping, beautifulsoup
Title: Ultra fast Amazon scraper multi-threaded This is a follow up to the code here: Web scraper that extracts urls from Amazon and eBay
A multi-threaded modification to the previous version that is Amazon focused and most of the necessary documentation ... | {
"domain": "codereview.stackexchange",
"id": 36323,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "python, python-3.x, multithreading, web-scraping, beautifulsoup",
"url": null... |
4. Using a graphing calculator or computer software that allows us graph functions, we can plot the function $$f(x)$$, making sure the functional values of $$f(x)$$ for x-values near a are in our window. We can use the trace feature to move along the graph of the function and watch the y-value readout as the x-values a... | {
"domain": "libretexts.org",
"id": null,
"lm_label": "1. YES\n2. YES",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.990440598959895,
"lm_q1q2_score": 0.8074393617146093,
"lm_q2_score": 0.8152324960856175,
"openwebmath_perplexity": 408.5510906027908,
"openwebmath_score": 0.8519446849822998,
"tags": ... |
java, unit-testing, api, jodatime
I like that you name your methos quite explicit, for my taste they are a bit too long. Good thing: in case of the @Test you exactly know the conditions for this test. But i would suggest giving shorter names.
Regarding to your comments: in "Clean Code" (by Robert C Martin) it is said ... | {
"domain": "codereview.stackexchange",
"id": 5615,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "java, unit-testing, api, jodatime",
"url": null
} |
# Finding equation of curve from simple graph
1. Jul 2, 2010
### hurliehoo
Hi can anyone please tell me how to find an equation from a graph.
It's a fairly simple graph. A symmetrical curve with a maximum at y=0.5, and y=0 at x=0 and x=7.5 ... any suggestions appreciated!
2. Jul 2, 2010
### arildno
Generally, it... | {
"domain": "physicsforums.com",
"id": null,
"lm_label": "1. YES\n2. YES",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9748211561049159,
"lm_q1q2_score": 0.8285698859627256,
"lm_q2_score": 0.8499711775577736,
"openwebmath_perplexity": 1185.2317802187188,
"openwebmath_score": 0.7697854042053223,
"ta... |
slam, navigation, rviz, octomap
Originally posted by onkel_keks on ROS Answers with karma: 28 on 2013-09-08
Post score: 0
EDIT: I simply tried launching rgbdslam and octomap_server separately, and it worked. Octomap_server also didn't need my entire RAM this time. So it must be a problem with that launchfile. Thanks ... | {
"domain": "robotics.stackexchange",
"id": 15460,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "slam, navigation, rviz, octomap",
"url": null
} |
ros, gazebo, ros2, camera
<ros2_control name="GazeboSystem" type="system">
<hardware>
<plugin>gazebo_ros2_control/GazeboSystem</plugin>
</hardware>
<joint name="joint_1">
<command_interface name="position">
<param name="min">-3.14</param>
<param name="max">3.14</param>
</command_interfac... | {
"domain": "robotics.stackexchange",
"id": 38295,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "ros, gazebo, ros2, camera",
"url": null
} |
ros, rosinstall, mit-ros-pkg
- Issuer: MIT Computer Science & Artificial Intelligence Lab, Cambridge, Massachusetts, US
- Fingerprint: f2:1b:58:1c:eb:c1:a2:ed:ea:fc:87:96:f0:fa:80:92:59:ae:27:92
(R)eject, accept (t)emporarily or accept (p)ermanently? svn: OPTIONS of 'https://svn.csail.mit.edu/mit-ros-pkg/branches/san... | {
"domain": "robotics.stackexchange",
"id": 8921,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "ros, rosinstall, mit-ros-pkg",
"url": null
} |
quantum-mechanics, condensed-matter, conformal-field-theory, phase-transition, ising-model
How to derive CFT model for 1d transverse Ising model?
What is the central charge for the above derived cft? The Jordan-Wigner transformation can be used to exactly transform the 1D quantum transverse Ising model into a system o... | {
"domain": "physics.stackexchange",
"id": 66139,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "quantum-mechanics, condensed-matter, conformal-field-theory, phase-transition, isi... |
neural-networks, game-ai
A small adaptation to the network might be sufficient (though it would also involve re-training again). Recently, OpenAI has been writing about their attempts to train agents to play the game DOTA 2. Now, this isn't a card game, it doesn't require deckbuilding, but there is an aspect to the ga... | {
"domain": "ai.stackexchange",
"id": 659,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "neural-networks, game-ai",
"url": null
} |
c++, game, c++17, qt
void Cell::uncover()
{
if(hasMine()) {
uncoverMine();
}
else {
setToUncoveredDisplayType();
}
emit uncovered();
update();
}
void Cell::uncoverMine()
{
mDisplayType = DisplayType::mineExploded;
emit hitMine();
}
void Cell::setToUncoveredDisplayType(... | {
"domain": "codereview.stackexchange",
"id": 36550,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "c++, game, c++17, qt",
"url": null
} |
vba, web-scraping, selenium
Here is what I've written:
Sub RedmartScraper()
Dim driver As New ChromeDriver, html As New HTMLDocument
Dim post As HTMLHtmlElement | {
"domain": "codereview.stackexchange",
"id": 27146,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "vba, web-scraping, selenium",
"url": null
} |
c#, performance, programming-challenge, sorting
Swapping this appears to give a significant performance boost for large problems: it is 10 times faster on a particular random instance of size 200000 gist of code and results (it seems to be slower for smaller ones).
Running small problems (e.g. size 1100 and smaller), ... | {
"domain": "codereview.stackexchange",
"id": 36045,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "c#, performance, programming-challenge, sorting",
"url": null
} |
python, beginner, object-oriented, tic-tac-toe
def _computer_move(self, player_letter, computer_letter):
corners = (2, 4, 6, 8)
# First, check if we can win in the next move.
for i in range(8):
if self.board[i] == " ":
if self._check_win(computer_letter):
... | {
"domain": "codereview.stackexchange",
"id": 42932,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "python, beginner, object-oriented, tic-tac-toe",
"url": null
} |
Thus the general formula would be $$\left(\sum_{n=0}^\infty t^{2n}\right)^2 = \sum_{n=0}^\infty (n+1)t^{2n}$$
Note that if we were presented with $(\sum a_n t^{2n})^2$ instead, the answer would be much messier and would involve a double sum: $(\sum a_n t^{2n} )^2= \sum_n \sum_j a_j t^{2n}$
$${\frac {1}{1-t}}=\sum _{n... | {
"domain": "stackexchange.com",
"id": null,
"lm_label": "1. YES\n2. YES",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9683812299938006,
"lm_q1q2_score": 0.8048633188851584,
"lm_q2_score": 0.8311430394931456,
"openwebmath_perplexity": 507.1403305330287,
"openwebmath_score": 0.8964768052101135,
"tag... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.